A cobalt-60 source from a disused cancer treatment device in Guatemala was removed over fears it could be stolen and turned into a dirty bomb.
https://www.foxnews.com/politics/us-removes-radioactive-cancer-treatment-material-central-american-country-dirty-bomb-risk
https://www.foxnews.com/politics/us-removes-radioactive-cancer-treatment-material-central-american-country-dirty-bomb-risk